Re: [R] Finding a single unique item in duplicated vectors

From: John Kane <jrkrideau_at_yahoo.ca>
Date: Wed 04 Apr 2007 - 17:15:35 GMT

> I have a very simple problem and am completely
> missing
> the solution.
> I have two character variables (character ID's from
> two datasets) Data set 'b'
> is data set 'a' with one more subject added.
> How do I find out which is the added subject?
>
> I have tried duplicated and unique without much
> success. I can find all the
> duplicated ID's but how do I extract the new
> "unique"
> one?

Amended examaple ( I forgot I had Hmic loaded and was using it.)

a  <-  as.character(c("b","d","c","a"))
b  <- as.character( Cs("a","b,"c","d","e"))
h  <- c(a,b) ; h

h[duplicated(h)]

> I just want to extract that "e"!
>
> I had thought that
> h[!duplicated(h)]
> might work but it simply returns all the unique
> values
> whereas
> I simply want to simply find the odd man out.
>
> I thought of using sorting the vectors & using a
> cbind
> but the id's are assigned
> more or less randomly so that didn't work.
>
> Thanks
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained,
> reproducible code.
>



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Thu Apr 05 03:21:06 2007

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Wed 04 Apr 2007 - 17:31:02 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.